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The Origins of UV–optical Color Gradients in Star-forming Galaxies at z ∼ 2: Predominant Dust Gradients but Negligible sSFR Gradients

  • Authors: F. S. Liu, Dongfei Jiang, S. M. Faber, David C. Koo, Hassen M. Yesuf, Sandro Tacchella, Shude Mao, Weichen Wang, Yicheng Guo, Jerome J. Fang, Guillermo Barro, Xianzhong Zheng, Meng Jia, Wei Tong, Lu Liu, and Xianmin Meng

2017 The Astrophysical Journal Letters 844 L2.

  • Provider: AAS Journals

Caption: Figure 4.

Rest-frame NUV − B profiles (both dust-reddened and dust-corrected) and inferred sSFR profiles in each mass bin, which are normalized by their ﹩{R}_{\mathrm{SMA}}﹩ in arcsec (upper) and are shown in physical radius (lower), respectively. Only the individual profiles of dust-reddened NUV − B and inferred sSFR are shown with gray lines. The shaded regions show the best-fit linear models with ﹩2\sigma ﹩ lower and upper limits to all individual profiles (no PSF-correction). The green dashed lines are PSF-corrected median profiles. The gray hatching indicate the regions within the median PSF FWHM (﹩0\buildrel{\prime\prime}\over{.} 18﹩). The vertical dashed lines indicate the positions of ﹩2{R}_{\mathrm{SMA}}﹩ (median values for the profiles in kpc).

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